:root {
  --duo-green: #58cc02;
  --duo-green-light: #61e002;
  --duo-green-dark: #46a302;
  --duo-green-shadow: #58a700;
  --ink: #3c3c3c;
  --ink-strong: #4b4b4b;
  --muted: #777777;
  --muted-light: #afafaf;
  --canvas: #ffffff;
  --wash-blue: #ddf4ff;
  --surface: #ffffff;
  --surface-alt: #f7f7f7;
  --border: #e5e5e5;
  --border-strong: #dadada;
  --link-blue: #1cb0f6;
  --link-blue-dark: #1b99d6;
  --navy: #042c60;
  --super-navy: #100f3e;
  --warning: #ffc800;
  --streak: #ff9600;
  --footer-soft: #d7ffb8;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --max: 988px;
  --wide: 1090px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Nunito", system-ui, sans-serif;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.41;
  color: var(--muted);
  background: var(--canvas);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--link-blue);
  text-decoration: none;
}

a:hover {
  color: var(--link-blue-dark);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--link-blue);
  outline-offset: 2px;
}

.btn-primary:focus-visible {
  outline-color: var(--duo-green-dark);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 12px 16px;
  background: var(--duo-green);
  color: #fff;
  font-weight: 700;
}

.skip-link:focus {
  left: 16px;
}

.container {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
}

.container--wide {
  width: min(100% - 32px, var(--wide));
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--canvas);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}

.site-logo {
  font-family: "Fredoka", "Nunito", sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--duo-green);
  letter-spacing: -0.01em;
}

.site-logo span {
  color: var(--ink-strong);
}

.header-cta {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--link-blue);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 2px solid var(--border);
  border-bottom-width: 4px;
  border-bottom-color: var(--border-strong);
  background: var(--surface);
  transition: background 0.15s ease;
}

.header-cta:hover {
  background: var(--wash-blue);
  color: var(--link-blue-dark);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: transform 0.1s ease, background 0.15s ease;
}

.btn-primary {
  background: var(--duo-green);
  color: #fff;
  box-shadow: 0 4px 0 var(--duo-green-shadow);
  max-width: 100%;
  width: min(330px, 100%);
}

.btn-primary:hover {
  background: var(--duo-green-light);
  color: #fff;
}

.btn-primary:active {
  transform: translateY(4px);
  box-shadow: none;
}

.btn-secondary {
  background: var(--surface);
  color: var(--link-blue);
  border: 2px solid var(--border);
  border-bottom-width: 4px;
  border-bottom-color: var(--border-strong);
  width: min(330px, 100%);
}

.btn-secondary:hover {
  background: var(--wash-blue);
}

.btn-secondary:active {
  transform: translateY(4px);
  border-bottom-width: 2px;
}

.btn-super {
  background: #fff;
  color: var(--super-navy);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.25);
}

.btn-super:hover {
  background: var(--wash-blue);
  color: var(--super-navy);
}

/* Hero */
.hero {
  padding: 48px 0 64px;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero__visual {
  order: 1;
}

.hero__copy {
  order: 2;
}

.hero-brand {
  font-family: "Fredoka", "Nunito", sans-serif;
  font-size: clamp(3rem, 8vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--duo-green);
  margin: 0 0 8px;
}

.hero-tagline {
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--ink-strong);
  margin: 0 0 16px;
  line-height: 1.25;
}

.hero-lead {
  margin: 0 0 28px;
  max-width: 473px;
  color: var(--muted);
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}

.hero-illustration {
  width: 100%;
  max-width: 424px;
  margin-inline: auto;
}

/* Application rail */
.app-rail {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
  background: var(--surface);
}

.app-rail__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.app-rail__label {
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted-light);
}

.chip {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-pill, 999px);
  border: 2px solid var(--border);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--ink);
  background: var(--surface-alt);
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
}

button.chip:hover {
  background: var(--wash-blue);
  border-color: var(--link-blue);
}

.chip__icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--wash-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

/* Features */
.section {
  padding: 96px 0;
}

.section--wash {
  background: var(--wash-blue);
}

.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.feature--reverse .feature__visual {
  order: 2;
}

.feature--reverse .feature__text {
  order: 1;
}

.feature__title {
  font-family: "Fredoka", "Nunito", sans-serif;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--duo-green);
  margin: 0 0 20px;
}

.feature__body {
  margin: 0 0 24px;
  max-width: 503px;
}

.feature-list {
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 12px;
  color: var(--ink);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 20px;
  height: 20px;
  background: var(--duo-green);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.2L4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4L9 16.2z'/%3E%3C/svg%3E");
  background-size: 14px;
  background-repeat: no-repeat;
  background-position: center;
}

.card-visual {
  background: var(--surface);
  border-radius: var(--radius-xl);
  padding: 32px;
  border: 2px solid var(--border);
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Trust */
.trust {
  text-align: center;
  padding: 64px 0;
  background: var(--surface-alt);
}

.trust__title {
  font-family: "Fredoka", "Nunito", sans-serif;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--navy);
  margin: 0 0 12px;
}

.trust__sub {
  margin: 0 0 40px;
  font-size: 17px;
}

.trust-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 640px;
  margin-inline: auto;
}

.stat-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  border: 2px solid var(--border);
  border-bottom-width: 4px;
  border-bottom-color: var(--border-strong);
}

.stat-card__value {
  font-family: "Fredoka", sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--duo-green);
  margin: 0 0 8px;
}

.stat-card__label {
  margin: 0;
  font-size: 15px;
  color: var(--ink);
  font-weight: 700;
}

.logo-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
}

.logo-pill {
  padding: 12px 20px;
  background: var(--surface);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 14px;
  color: var(--muted);
  border: 1px solid var(--border);
}

/* Super block */
.super-block {
  background: var(--super-navy);
  color: #fff;
  padding: 96px 0;
  text-align: center;
}

.super-block__title {
  font-family: "Fredoka", sans-serif;
  font-size: clamp(2rem, 5vw, 3rem);
  margin: 0 0 16px;
  color: #fff;
}

.super-block__lead {
  max-width: 560px;
  margin: 0 auto 32px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 17px;
}

.super-block .btn-super {
  margin-inline: auto;
}

/* Benefits grid */
.benefits {
  padding: 80px 0;
}

.benefits__title {
  font-family: "Fredoka", sans-serif;
  font-size: clamp(2rem, 4vw, 2.75rem);
  text-align: center;
  color: var(--duo-green);
  margin: 0 0 48px;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.benefit-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 2px solid var(--border);
  text-align: center;
}

.benefit-card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: var(--radius-md);
  background: var(--wash-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.benefit-card h3 {
  font-size: 1.125rem;
  color: var(--ink-strong);
  margin: 0 0 8px;
}

.benefit-card p {
  margin: 0;
  font-size: 15px;
}

/* Final CTA */
.final-cta {
  padding: 80px 0 0;
  background: linear-gradient(180deg, var(--canvas) 0%, #e8f9d4 100%);
  text-align: center;
}

.final-cta__inner {
  padding-bottom: 48px;
}

.final-cta__title {
  font-family: "Fredoka", sans-serif;
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--ink-strong);
  margin: 0 0 16px;
}

.final-cta__lead {
  max-width: 520px;
  margin: 0 auto 28px;
}

/* Footer */
.site-footer {
  background: var(--duo-green);
  color: #fff;
  padding: 48px 0 32px;
}

.site-footer a {
  color: var(--footer-soft);
}

.site-footer a:hover {
  color: #fff;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

.footer__brand {
  font-family: "Fredoka", sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 12px;
}

.footer__tagline {
  color: var(--footer-soft);
  margin: 0;
  font-size: 15px;
}

.footer__heading {
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 16px;
}

.footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer__links li {
  margin-bottom: 8px;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 24px;
  font-size: 14px;
  color: var(--footer-soft);
  text-align: center;
}

.affiliate-note {
  font-size: 13px;
  color: var(--muted-light);
  margin-top: 16px;
  max-width: 640px;
  margin-inline: auto;
}

/* Responsive */
@media (max-width: 900px) {
  .hero__grid,
  .feature,
  .benefits-grid,
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    order: 1;
  }

  .hero__copy {
    order: 2;
    text-align: center;
  }

  .hero-lead,
  .hero__actions {
    margin-inline: auto;
    align-items: center;
  }

  .feature--reverse .feature__visual,
  .feature--reverse .feature__text {
    order: unset;
  }

  .feature__text {
    text-align: center;
  }

  .feature__body,
  .feature-list {
    margin-inline: auto;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .trust-stats {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .section {
    padding: 64px 0;
  }

  .site-header__inner .header-cta {
    padding: 8px 12px;
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn-primary:active,
  .btn-secondary:active {
    transform: none;
  }
}